Milking-machine.



S. A. EKEHORN.

MILKING MACHINE.

APPLICATION FILED DEO.13,1'909 Patented June 6, 1911.

2 BEBBTS-SHEET 1.

rm: NORRIS PETERS cm, wasmuarau, n. c.

UNITED %TATF% PATENT @FFTQE.

SVEN AUGUST EKEHOR-N, OF STOCKHOLM, SW'EDEN.

MILKING-IJIACHINE.

Application filed. December 13, 1909.

To all whom it may concern:

Be it known that I, SvnN AUGUST EnnnoRN, a subject of the King ofSweden, and residing at Stockholm Sweden, have invented certain new anduseful Improvements in Milking-Machines, of which the following is aspecification.

This invention relates to improvements in milking machines of thatcharacter in which the teat or dug of the animal is grasped andsuccessively compressed from the root or base toward the end for thepurpose of withdrawing the milk.

One of the objects of this invention is to provide a yielding andpreferable adjustable connection for one part of the teat graspingdevice and positive acting means for another portion of said device. Sothat if the positively acting means exerts too great a pressure, reliefmay be afforded by such yielding connection.

The device of my invention will be more fully described in connectionwith the accompanying drawings and will be more particularly pointed outand ascertained in and by the appended claims.

In the drawings: Figure 1 is a vertical sectional view, with parts inelevation, of a machine embodying one form of my invention. Fig. 2 is ahorizontal sectional view on line 22 of Fig. 1. Fig. 3 is a View similarto Fig. 1 of a modified form of my invention. Fig. a is a sectional viewon line 4L- l of Fig. 3.

Like numerals of reference designate similar parts throughout thedifferent figures of the drawings.

For elearness of illustration I have only shown one complete teatgrasping device in each view, but it will be understood that any desirednumber of these devices may be provided.

First referring to the form shown in Figs. 1 and 2, 12 designates acasing or housing having upper and lower walls and in the lower walls ofwhich discharge openings 13 are formed. A suitable discharge outletcasing 14, is provided, having a discharge spout 15. An operating shaft16 is provided with a bearing 17 and projects into the casing 12 and maybe driven from any suitable source of power. In the form shown onemember of aclutch 17 is indicated, but inasmuch as this does notconstitute a part of my invention this construction will not be furtherde scribed. A spindle 18 is mounted in the up- Specification of LettersPatent.

Patented June 6, 1911.

Serial No. 532,845.

per and lower walls of the casing 12 and on this spindle is mounted oneof a pair of dug engaging elements 1. As shown, a plurality of companiondug engaging elements 19 is provided and which are arranged to co-actwith the elements 1 in compressing the dug, said elements are suitablycushioned and covered, as indicated at 2 to provide a soft yieldingsurface for engagement with the dug. The elements 19 are provided withcam engaging portions 20 disposed and arranged to be actuated by aplurality of cams, or a single cam 10 mounted on the shaft 16 andprovided with projecting cam portions. As is common in this kind ofmachines the cam portions of the cam 10 may be arranged to successivelyactuate the elements 19 by first compressing the uppermost elementthereof and thereafter successively compressing or actuating the nextlower element. On the upper end of the shaft 16 a disk 4: is looselymounted and is provided with a hub l. A connection 3 is provided betweenthe disk 4, and the element 1 and such connection is rendered adjustableby a nut 5. A spring 6 is spirally wound about the hub 4E and isconnected therewith at 6, at one end of the spring. The other end of thespring is indicated at 7 and projects radially through an opening in thecasing 12 so as to render the end 7 accessible to the operator. ()n thelower margin of said opening a plurality of notches 8 is formed and theend 7 may be ad vanced along and seated in one of said notches for thepurpose of increasing or decreasing the tension of the spring. It willreadily be seen that the cams impart a uniform compressing movement tothe elements 19 about the spindle 18 and toward the element 1, and thatif this compression is too severe upon the dug the element 1 may yieldto relieve the pressure. It will be seen that the amount of compressionmay be determined not only by adjustment of the nut 5 but also by theadjustment of the spring end 7.

Next referring to the form of my invention shown in Figs. 3 and 4t, 16designates the operating shaft on the upper end of which a disk 21 isprovided. This disk 21 carries a stud or pin 22 which is eccentricallydisposed with respect to the axis of the shaft 16. On this pin 22 isloosely mounted the hub 11 of a disk 4;. A spring 6 is spirally disposedabout this hub and is secured thereto at one end in a manner similar tothe construction shown in Fig. 1. The end 7 of the spring 6 isadjustable in notches 8 in a manner similar to the first describedconstruction. A connection 3 is provided between the disk 4 and element1, and this connection is likewise rendered adjustable by a nut 5. Inthis construction the cams 10 and the eccentrically disposed stud 22 areso timed that the element 1 will be drawn inwardly at the same time thatthe elements 19 are forced outwardly. This action results from thebodily circular movement imparted to disk 4 by the eccentric rotation ofthe stud 22.

I claim 1. A milking machine comprising in combination, movably mounteddug engaging elements, power actuated means connected with one of saidelements to operate the same, a power actuated means moving in timedrelation with said first named means to actuate the remaining element cooperative with the first named element.

2. A milking machine comprising in combination, movably mounted dugengaging elements, rotary means moving one of said elements to compressthe dug, and a member moving in timed relation wit-h said means andyieldingly connected with the companion element to compress the dugtherebetween.

3. A milking machine comprising in combination, pivotally mounted dugengaging elements, a shaft provided with a cam for engaging one of saidelements to compress the dug, a disk eccentrically mounted on saidshaftand provided with a connection with the other elements, and aspring for rendering the engagement of said elements with said dugyielding.

4. A milking machine comprising in combination, movably mounted dugengaging elements, a shaft, a cam on said shaft for moving one of saidelements to compress the dug, a disk eccentrically mounted on saidshaft, means connecting a portion of the periphery of said disk with theremaining dug engaging element, a spring for altering the position tosaid disk on said eccentric, and elements whereto said spring may beadjustably anchored.

A milking machine comprising in combination, movably mounted dugengaging elements, power actuated means yieldingly connected with one ofsaid elements to actuate the same and power actuated means moving intimed relation with said first named means for rigidly engaging the remaining element and actuate the same in cooperative relation with saidfirst named ele ment.

6. A milking machine comprising in combination, movably mounted dugengaging elements, power actuated means yieldingly connected with one ofsaid elements to actuate the same, a device for varying the tension ofsaid yielding connection, a power actu ated means moving in timedrelation with said first named means to actuate the remaining element incooperative relation with said first named element.

7. A milking machine comprising in combination, movably mounted dugengaging elements, power actuated eccentric means for actuating one ofsaid elements, a power actuated means moving in timed relation with thesaid first named means for actuating the remaining element incooperative relation with said first named element.

In testimony whereof I have signed my name to this specifications in thepresence of two subscribing witnesses.

SVEN AUGUST EKEHORN. l/Vitnesses:

J. R. MAnKI-IAM, AsTR D BERG.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

